I'm a 19 year old girl and have been on mycrogynon for about 10 months now, I have only been sexually active sinse April, however I'm home from uni now and me and my boyfriend have been having regular sex for about a month. I take the pill religiously at the same time everyday, I have an alarm but I think I was an hour late one day but I haven't missed any pills. I take my last pill on the Thursday and usually get my period on the Monday but it's now tuessay and still no perio, is there a chance I'm pregnant?